In versions prior to June 2014, the Site FAQS feature was included on a dedicated page called /faqs.php
in versions after June 2014, the Site FAQs feaature is included (embedded) in the CMS pages manager.
You can include the Site FAQs display on any CMS managed page by turning off/on that feature when creating or editing a CMS page in the web-based admin:
CMS > Site Pages